Williams P500118 Limit Switch 319825-402 while the L-M1 contacts close

while the L-M1 contacts close on high pressure to trigger notification systems

Operating on a universal 190-600 VAC range

minimizing downtime during field repairs

this wrap-around run capacitor mounting bracket features dimensions of 1

verifying the underlying cause of a trip—such as restricted airflow or burner malfunction—is essential before utilizing the manual reset button to restore operation

Williams P500118 Limit Switch 319825-402 while the L-M1 contacts closeThe Williams P500118 Limit Switch is a critical OEM high limit safety control engineered for precision temperature regulation in Williams Comfort Products heating systems. Rated at 300F, this auto reset limit switch acts as a primary fail safe, monitoring heat exchanger temperatures to prevent thermal overage and potential component failure. In a professional HVAC furnace repair context, utilizing an authentic Williams furnace part ensures the system